Planograph co



W. C. HUNTOON.

PUNCTURE PLUG.

APPLICATIQN FILED MN. 28. 1919.

Patented July 22, 1919.

El vwamtoz ANOGRAPH c0.. WASHINGTON. n. C

a TED STATS PUNCTURE-PLUG.

Specification of Letters Patent.

Patented July 22, 1919.

Application filed January 28,1919. Serial No. 273,506,

To all whom it may concern:

Be it known that I, WILLIAM C. HUNTOON, a citizen of the United States,residing at Providence, in the county of Providence and State of RhodeIsland, have invented a new and useful Improvement in Puncture-Plugs, ofwhich the following is a specification.

This invention relates to certain new and useful improvements in apuncture plug, and it has for its primary object to provide a novelmetal device for clamping onto the inner tube of a tire about a punctureso as to positively seal the same.

The invention consists of a base member mounted in a swiveled manner tothe head of a screw threaded stem, the base member being insertiblethrough the puncture of a tube so as to lie against the inner facethereof with the threaded stem extending outwardly through the puncture,and a clamping top plate having threaded engagement with the stem forbeing screwed down onto the outer face of the tube and force the latterinto tight seating relation with the base member.

' In the drawings- Figure 1 is a transverse fragmental section on line11 of Fig. 2 through a tube having the present invention appliedthereto.

Fig. 2 is an outside elevation of the puncture plug applied to afragment of the tube.

Fig. 3 is a plan view ofthe base member and the threaded stem attachedthereon, and

Fig. 4 is a sectional view on line 44 of Fig. 2.

Referring more in detail to the drawing, the numeral 1 designates thebase member composed of a base plate 2 and a sheet metal cap or covering3 therefor, said cap having its edge turned up about the edge of thebase plate and over the opposite face thereof as at 4. Within theinturned edge the outer face of the base plate 2 is formed with a groove2' conformlng to the contour thereof. The cap 3 is provided with acentral enlargement 5 to receive the head 6 of the screw threaded stem 7which extends through the plate 2, the latter having a slot 8extending-to one side of the stem into which the latter may be inclinedto bring the base member nearer into alinement with the stem forinsertion through a puncture.

With the base member inserted through the puncture and the threaded stemprojecting through the latter, the base member is drawn up against theinner face of the tube and then a clamping or top plate 9 is threaded onthe stem and brought down onto the outer face of the tube to firmlyclamp the latter between the base-1nember and the top plate. In thisconnection it will be noted that the top plate is shaped to beconformably received within the inturned edge 4. This provisiontherefore permits of the top plate f0rcing)the tube down onto the bottomor base mem er, and also into the groove 2, thereby forming a positivelytight seal, after which the projecting threaded stem is cut ofisubstantially flush with the top plate.

The improved puncture plug does not require the washing of the surfacewith gasolene, as is necessary with the rubber patches, nor is theapplication of a cement requisite for the eflicient employment of thismetal plug. The swivel mounting of the stem permits of the same beingrotated While the top plate is held in alinement with the base member sothat'the former will firmly clamp the tube therein.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent..is

1. A puncture plug comprising a base member formed of a base plate and asheet metal cap having its edge turned up about the edge of the plateand over onto the opposite face thereof, said plate formed with a grooveadjacent to and within the inturned edge and a central pening elongatedtoward one edge, a screw-threaded stem passing through the centralopening and formed with a head swiveled between the plate and cap, and atop clamping plate threaded on the stem and conforming to the inturnededge.

2. A puncture plug comprising a fiat base member having a centralaperture, a surrounding groove, a threaded stem swiveled in theaperture, said base member provided with a raised border encircling thegroove in conformity therewith, and a clamping plate threaded on thestem and being of such size as to be receivable within the raised borderwhereby the clamped portion of a punctured body will be forced directlydownwardly into the groove and outwardly against the raised border.

3. A puncture plug comprising a fiat base plate having an aperturetherethrough and an encircling groove in one face, a rotatable, headedstem extending through the aperture of the plate with its head seatedagainst the opposite face of the latter, a cap cover- In testimonywhereof I have signed my ing the head and plate and extending about nameto this specifioation in the presence I the edges of the latter overonto the first of two subscribing witnesses.

face of the plate about the groove, and a WILLIAM C. HUNTOON; clampingplate threaded on the stem to Witnesses:

clamp a portion of an inner tube into the ADA E. HAGERTY,

groove. J. A. MILLER.

" copies of this patent may be obtained for five cents each, byaddressing the Commissioner of Patents,

Washington, I). G. a l a

